In my opinion, the Planet 2000 isn't an edgy CD player, having owned one, and now owning a Jupiter 2000. That said, a non-tube option with a very lush sound that works exceptionally well with the Planet is a Bel Canto DAC 1 (or DAC 1.1, or DAC 2 depending on how much you want to spend) - I have used this combination before and it's a natural pairing.
Given that you're getting harshness with a famously laid-back CD player, perhaps the problem lies elsewhere. It could be the room itself causing this (first reflections, glare etc.), or some other component.
Given that you're getting harshness with a famously laid-back CD player, perhaps the problem lies elsewhere. It could be the room itself causing this (first reflections, glare etc.), or some other component.